Vibration and noise reduction type axial flow fan blade

Abstract

The utility model provides a vibration and noise reduction type axial-flow fan blade which comprises an axial-flow fan blade main blade used for flapping and two-end sound absorption clamping pads used for reducing noise, the two ends of the axial-flow fan blade main blade are sleeved with the two sets of two-end sound absorption clamping pads in an embedded mode, an inner fixing column is sleeved with the axial-flow fan blade main blade in an embedded mode, and the two ends of the axial-flow fan blade main blade are sleeved with the two sets of two-end sound absorption clamping pads in an embedded mode. And the rear end of the internal fixing column is fixedly connected with an internal embedding device, and the internal embedding device is in bolted connection with a connecting and fixing device. The utility model relates to a vibration and noise reduction type axial-flow fan blade, which is characterized in that the axial-flow fan blade is provided with an axial-flow fan blade main blade, so that the axial-flow fan blade can quickly circulate air, the axial-flow fan blade main blade is firmly controlled by the axial-flow fan blade main blade through an internal fixing column, the stability of the axial-flow fan blade main blade is improved, and the stability of the axial-flow fan blade main blade is improved by an internal embedding device. The angle of the device can be adjusted, the flexibility and adjustability of the device are improved, the device is firmly fixed to a shaft by arranging a connecting and fixing device, and the stability of the device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of axial flow fan blades, in particular to a vibration-reducing and noise-reducing axial flow fan blade. Background Art

[0002] Axial flow fans are widely used. They are fans whose airflow direction is in the same direction as the axis of the fan blades. For example, electric fans and air conditioner outdoor fans are fans that run in an axial flow mode. They are called "axial flow" because the gas flows parallel to the fan axis. Axial flow fans are usually used in situations where the flow rate requirements are high and the pressure requirements are low. Axial flow fans are fixed in position and move the air. The axial flow fan blades are the blades above. The general flow fan blades are fixed when they leave the factory and cannot be adjusted in angle. They have poor flexibility and adjustability, making it difficult to meet the needs of different effects. They are also loud and affect the work of others.

[0003] The existing authorized public number is CN217976675U. The utility model discloses a vibration-reducing and noise-reducing short-diameter fan blade of an axial flow fan. A plurality of short-diameter blades are scattered around the axis of the hub and offset along the circumferential interval. The inner edge of the short-diameter blade is fixed to the hub, and the inner edge is radially extended outward to the outer edge. A trapezoidal vibration-reducing wing plate is provided on the outer edge near the trailing edge toward the suction curved surface along the axial direction. The connecting end of the trapezoidal vibration-reducing wing plate is longer than the extending end. The thickness of the plate body of the trapezoidal vibration-reducing wing plate gradually decreases from the connecting end to the extending end. The connecting end does not protrude from the end face of the hub. The outer diameter of the hub is 100mm to 150mm, and the outer diameter of the hub is 60% to 70% of the outer diameter of the blade. The short-diameter blade has a short-diameter blade shorter than the outer diameter of the hub. By optimizing the blade structure, the wind stability is improved. While increasing the wind speed and air volume, it can effectively suppress blade vibration and reduce wind noise. However, the above-mentioned vibration-reducing and noise-reducing axial flow fan blades have poor flexibility and adjustability and cannot adjust the flow blade angle, and there is no corresponding structure to reduce noise. There is an urgent need for vibration-reducing and noise-reducing axial flow fan blades to solve the above problems. Utility Model Content

[0004] The technical content of the utility model is to provide a vibration-reducing and noise-reducing axial flow fan blade.

[0005] In order to solve the above problems, the utility model provides a vibration-reducing and noise-reducing axial flow fan blade, comprising: an axial flow fan blade main blade for fanning and two-end sound-absorbing pads for noise reduction, and two sets of two-end sound-absorbing pads are nested at two ends of the axial flow fan blade main blade, an internal fixing column is nested inside the axial flow fan blade main blade, the rear end of the internal fixing column is fixedly connected with an internal embedding device, and the internal embedding device is bolted with a connecting and fixing device;

[0006] The internal inlay device comprises an internal inlay disc, and the internal inlay disc is nested in the connecting and fixing device;

[0007] The connecting and fixing device comprises a connecting and fixing chassis, and the connecting and fixing chassis is located outside the internal embedding device.

[0008] As a further solution of the present invention, the main blade of the axial flow fan blade is an arc-shaped fan plate, and the main blade of the axial flow fan blade gradually becomes thicker from both ends to the middle. The inside of the main blade of the axial flow fan blade begins to have a plug-in nesting groove that cooperates with the internal fixing column, so that the main blade of the axial flow fan blade can be firmly fixed.

[0009] As a further solution of the utility model, the sound-absorbing pads at both ends are provided with nested fixing grooves matching the main blades of the axial flow fan blades, the outer sides of the sound-absorbing pads at both ends are streamlined, and the sound-absorbing pads at both ends are made of sound-absorbing materials to increase the sound absorption effect of the device.

[0010] As a further solution of the present invention, the internal fixing column is a long strip plate, and the length of the internal fixing column matches the main blade of the axial flow fan blade, making the main blade of the axial flow fan blade more stable.

[0011] As a further solution of the utility model, the internal embedded disc bolts are connected with ten groups of first fixing bolts, and the rear end bolts of the first fixing bolts are connected with fixing bolt nuts, so that the internal embedded device can be fixed in the connecting fixing device.

[0012] As a further solution of the present invention, the internal inlaid disc is provided with a bolt hole matching with the first fixing bolt, and the internal inlaid disc is provided with a nesting hole matching with the first fixing bolt. The first fixing bolt is nested in the surface of the internal inlaid disc, so that the internal inlaid device can be adjusted and fixed at an angle.

[0013] As a further solution of the utility model, four groups of second fixing bolts are connected around the connecting and fixing chassis, and the connecting and fixing chassis is fixedly connected to the shaft through the second fixing bolts, so that the device is firmly fixed.

[0014] As a further solution of the utility model, the connecting and fixing chassis is provided with a bolt hole matching with the second fixing bolt, the connecting and fixing chassis is provided with a nesting groove matching with the internal inlaid disc, the connecting and fixing chassis is provided with a bolt hole matching with the first fixing bolt, and the rear side of the connecting and fixing chassis is provided with a nesting groove matching with the fixing bolt and nut, so that the connecting and fixing device can cooperate with angle adjustment.

[0015] In summary, the utility model includes at least one of the following beneficial technical effects:

[0016] First, the utility model records a vibration-damping and noise-reducing axial-flow fan blade, which records that by providing an axial-flow fan blade main blade, the device can quickly circulate air, by providing an internal fixing column, the device can firmly control the axial-flow fan blade main blade through the internal fixing column, thereby increasing the stability of the device, by providing an internal inlay device, the device can be adjusted in angle, thereby increasing the flexibility and adjustability of the device, and by providing a connecting and fixing device, the device can be firmly fixed on the shaft, thereby increasing the stability of the device.

[0017] Second, the utility model records a vibration-reducing and noise-reducing axial-flow fan blade, which records that by providing sound-absorbing pads at both ends, the sound-absorbing ability of the fan blade is enhanced and the noise is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of the left integral inclined surface structure of the vibration-reducing and noise-reducing axial flow fan blade of the utility model;

[0020] Figure 2 It is a schematic diagram of the overall inclined surface structure on the right side of the vibration-reducing and noise-reducing axial flow fan blade of the utility model;

[0021] Figure 3 It is a schematic diagram of the wind flow blade structure of the vibration and noise reduction axial flow fan blade of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the internal embedding device of the vibration-reducing and noise-reducing axial-flow fan blade of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the connection and fixing device of the vibration-reducing and noise-reducing axial flow fan blade of the utility model;

[0024] Figure numerals: 1. Axial fan main blade; 2. Sound-absorbing pads at both ends; 3. Internal fixing column; 4. Internal inlay device; 41. Internal inlay disc; 42. First fixing bolt; 43. Fixing bolt nut; 5. Connecting and fixing device; 51. Connecting and fixing chassis; 52. Second fixing bolt. DETAILED DESCRIPTION

[0025] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The vibration-reducing and noise-reducing axial-flow fan blade comprises: an axial-flow fan blade main blade 1 for fanning and two-end sound-absorbing pads 2 for noise reduction, and two sets of two-end sound-absorbing pads 2 are nested at two ends of the axial-flow fan blade main blade 1, an internal fixing column 3 is nested inside the axial-flow fan blade main blade 1, and an internal inlay device 4 is fixedly connected to the rear end of the internal fixing column 3, and a connecting fixing device 5 is bolted to the internal inlay device 4;

[0026] The internal inlay device 4 includes an internal inlay disc 41, and the internal inlay disc 41 is nested in the connecting and fixing device 5;

[0027] The connecting and fixing device 5 comprises a connecting and fixing chassis 51 , and the connecting and fixing chassis 51 is located outside the internal embedding device 4 .

[0028] Please refer to Figures 1 to 4 It can be seen that in order to allow the device to be angle-adjustable and increase the sound-absorbing effect of the device, the sound-absorbing pads 2 at both ends are provided with nested fixing grooves that match the main blades 1 of the axial flow fan blades, the outer sides of the sound-absorbing pads 2 at both ends are set to be streamlined, and the sound-absorbing pads 2 at both ends are composed of sound-absorbing materials. The internal inlaid disc 41 is bolted with ten groups of first fixing bolts 42, and the rear end of the first fixing bolt 42 is bolted with a fixing bolt nut 43. The internal inlaid disc 41 is provided with a bolt hole that matches the first fixing bolt 42, and the internal inlaid disc 41 is provided with a nesting hole that matches the first fixing bolt 42, and the first fixing bolt 42 is nested in the surface of the internal inlaid disc 41;

[0029] Please refer to Figure 1 , Figure 3 and Figure 5 It can be seen that in order to allow the device to be firmly fixed, the main blade 1 of the axial flow fan blade is an arc-shaped fan plate, and the main blade 1 of the axial flow fan blade is gradually thicker from both ends to the middle. The inside of the main blade 1 of the axial flow fan blade begins to have a plug-in nesting groove matched with the internal fixing column 3. The internal fixing column 3 is a long strip plate. The length of the internal fixing column 3 matches the main blade 1 of the axial flow fan blade. Four groups of second fixing bolts 52 are connected around the connecting and fixing chassis 51. The connecting and fixing chassis 51 is fixedly connected to the shaft through the second fixing bolts 52. The connecting and fixing chassis 51 has a bolt hole matched with the second fixing bolt 52. The connecting and fixing chassis 51 has a nesting groove matched with the internal inlaid disc 41. The connecting and fixing chassis 51 has a bolt hole matched with the first fixing bolt 42. The rear side of the connecting and fixing chassis 51 has a nesting groove matched with the fixing bolt nut 43.

[0030] The working principle of the vibration and noise reduction axial flow fan blade provided by the utility model is as follows:

[0031] The first step: First, the internal embedding device 4 and the connecting and fixing device 5 are adjusted and fixed to a desired angle by the first fixing bolt 42, and then fixed to the shaft by the second fixing bolt 52, and then the motor is started for use.

[0032] Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations or direct or indirect applications may be made to these embodiments without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the attached claims and their equivalents, which are equally included in the scope of patent protection of the present invention.

Claims

1. Axial flow fan blade with vibration and noise reduction, characterized in that: include: An axial flow fan blade main blade (1) for fanning and two-end sound-absorbing pads (2) for noise reduction, wherein two sets of two-end sound-absorbing pads (2) are nested at two ends of the axial flow fan blade main blade (1), characterized in that: an internal fixing column (3) is nested inside the axial flow fan blade main blade (1), the rear end of the internal fixing column (3) is fixedly connected to an internal embedding device (4), and the internal embedding device (4) is bolted to a connecting fixing device (5); The internal inlay device (4) comprises an internal inlay disc (41), and the internal inlay disc (41) is nested in the connecting and fixing device (5); The connecting and fixing device (5) comprises a connecting and fixing chassis (51), and the connecting and fixing chassis (51) is located outside the internal embedding device (4).

2. The vibration-reducing and noise-reducing axial flow fan blade according to claim 1, characterized in that: The main blade (1) of the axial flow fan blade is an arc-shaped fan plate, and the main blade (1) of the axial flow fan blade gradually becomes thicker from both ends to the middle. The main blade (1) of the axial flow fan blade begins to have a plug-in nesting groove that matches the internal fixing column (3).

3. The vibration-reducing and noise-reducing axial flow fan blade according to claim 1, characterized in that: The sound-absorbing pads (2) at both ends are provided with nested fixing grooves that match the main blades (1) of the axial flow fan blades. The outer sides of the sound-absorbing pads (2) at both ends are arranged to be streamlined. The sound-absorbing pads (2) at both ends are made of sound-absorbing material.

4. The vibration-reducing and noise-reducing axial flow fan blade according to claim 1, characterized in that: The internal fixing column (3) is a long strip-shaped plate, and the length of the internal fixing column (3) matches the length of the main blade (1) of the axial flow fan blade.

5. The vibration-reducing and noise-reducing axial flow fan blade according to claim 1, characterized in that: The inner inlaid disc (41) is bolted with ten groups of first fixing bolts (42), and the rear ends of the first fixing bolts (42) are bolted with fixing bolt nuts (43).

6. The vibration-reducing and noise-reducing axial flow fan blade according to claim 5, characterized in that: The inner inlaid circular disc (41) is provided with a bolt hole matched with a first fixing bolt (42), and the inner inlaid circular disc (41) is provided with a nesting hole matched with the first fixing bolt (42), and the first fixing bolt (42) is nested in the surface of the inner inlaid circular disc (41).

7. The vibration-reducing and noise-reducing axial flow fan blade according to claim 1, characterized in that: Four groups of second fixing bolts (52) are connected around the connecting and fixing chassis (51), and the connecting and fixing chassis (51) is fixedly connected to the shaft via the second fixing bolts (52).

8. The vibration-reducing and noise-reducing axial flow fan blade according to claim 7, characterized in that: The connecting and fixing chassis (51) is provided with a bolt hole matched with a second fixing bolt (52), the connecting and fixing chassis (51) is provided with a nesting groove matched with an internal inlaid circular disc (41), the connecting and fixing chassis (51) is provided with a bolt hole matched with a first fixing bolt (42), and a nesting groove matched with a fixing bolt nut (43) is provided on the rear side of the connecting and fixing chassis (51).

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